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GLOSSARY OF TERMS
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T:
Tear
An small imperfection in the surface of glass.
Temper
The amount of residual stress in annealed glass.
Tempered Glass
A term for glass subjected to heat treatment, followed by rapid cooling, to produce a compressive surface layer.
Tension
The inner layer of heat treated glass.
Thermal Endurance
The ability of glass to withstand thermal shock.
Thermal Shock
The change in temperature, sometimes caused by a shadow, imposed on a glass surface.
Thermal Stress
The stress produced by the change in temperature within a glass body.
Tong Marks
Small, surface indentations along one edge of vertically-tempered or heat-strengthened glass, resulting from the tongs used to transport the glass through the heat treating process.
Toughened Glass
A term sometimes used by foriegn manufactures to identify heat-treated or fully tempered glass.
Tweel
A furnance door that opens vertically.
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